We have the experience, personnel, and resources to make your ADU project run smooth. We can ensure your job is done right and on time.

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ADU Happy Valley

Tiny houses aren’t the only homes increasing in Happy Valley. Accessory Dwelling Units (ADUs) are quite popular and just about everyone can get behind, particularly as our culture shifts from single-generational houses back to multigenerational houses. You might recognize ADUs by their more general names, like mother-in-law houses, prefab guest house with bathroom, backyard studios, granny-flats, ADU houses, studio apartments or guesthouse, or tiny house. Each city has their own zoning laws and allows for constructing a Happy Valley ADU unit.

If you do not currently know, Stanlees Home Improvements is a high quality, full service, earth friendly ADU builder in Happy Valley, OR while likewise concentrating on energy effective new house and Happy Valley ADU remodel construction. We are a household owned & operated local service with impeccable references, and a triple A credit rating. We are members of the BBB with high reviews, and are a Licensed Lead Safe business. We constantly offer totally free price quotes and on-time, on-budget.

Happy Valley ADU Contractor Services

ADU Pre Construction

We Are A Full Service ADU Contractor. Determine whats needed before you start your ADU project.

ADU Construction Management

As a full service ADU Builder, it's important to understand the construction activities when building an ADU unit.

After Construction

Find out what to expect with all post construction activities for building an ADU home

The People

Highly Trained Staff To Install Your ADU Unit Right The First Time. You can trust us and our long list of satisfied customers to handle your next project professionally

We Provide

We maintain a long list of satisfied customers who took the time to review our past performance. Be sure to check our testimonials and see what others are saying.

Our Experience

With a complete line of residential ADU Building or ADU Remodel options, Stanlees Home Improvements has the experience and know-how to fix nearly any roofing issue you may have.

Economical and Trustworthy ADU Contractors in Happy Valley, Oregon

Why Construct An ADU?

As the many names indicate, ADU Happy Valley areas are personal and different from the main section of the house. They’re likewise not restricted to family members. Besides being a guesthouse or living area for family or a nanny, you can utilize it as an individual area if required. For example, as a as a personal artist or writing studio, a film or home entertainment area for hosting football viewing parties, or an office.

Depending on the kind of ADU, they can have little noticeable influence on the exterior of the existing principal house, and small to no impact on building footprint. Nevertheless, there are numerous challenges associated with the design of such systems, such as including a separate entrance, producing egress in a basement or top floor, handicap accessible bathroom, and conference appropriate square video footage and overlay zoning requirements. Aside from physical modifications, ADUs may raise density and change the social character of the area.

Keep in mind most of towns do not enable homeowners to rent ADUs. Laws alter each year, so you ought to contact your city first. A “backyard cottage” sounds so non-threatening, who could possible oppose it?

ADU Contractor

Happy Valley ADU Contractors

Guidelines For Adding a Happy Valley ADU or Guesthouse:

You can have your guesthouse connected or removed to the main residence depending upon the size of your home lot. Happy Valley may need guesthouses to be of the exact same architectural design and building materials of the primary residence. You and your neighbors don’t want to see a clashing design on a daily basis.

If you live in a community with a homeowners association, contact them too. Your HOA might not enable a ADU or guesthouse.

ADU Contractors Happy Valley Oregon

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Happy Valley ADU Builder

Here are some common coding requirements for building an ADU in Happy Valley:

  • Avalibility

    Only one guest house per lot.

  • Parking

    You should supply one parking space for the ADU without eliminating from parking for the main house. You can not have 2 areas for the ADU.

  • Deminsion Guidelines

    The guesthouse can be 900 square feet at max and can not exceed 50 percent of the gross floor area of the main home.

  • The Garage

    A garage connected to the guest house is counted toward the the allowed square footage of the guesthouse. Follow the above link for extra rules if you have a large home and lot to begin with.

  • ADU Height

    The height of the guesthouse can not go beyond the height of the primary home.

  • Address Guidelines

    It can not have a different address from the primary residence.

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ADU Happy Valley Contractors

Employ A ADU Happy Valley Contractor?

Every contractor has their specialty, so be sure to find one with experience in home additions and remodels. Stanlees Home Improvements has built numerous ADU houses. We have positive local contractor reviews on Google, Yelp, Angie’s List, and or Facebook. Never ever sign an agreement without first evaluating an itemized bid for the job, which need to break out expenses into labor and materials. We constantly include a start and end date and reasonable market price quote. Our Happy Valley general contractors will constantly interact with you and let you know the number of individuals will be working on the home job and will be on your house, including if any of the work will be farmed out.

Residential ADU Happy Valley Contractor

Connected or detached? Conversion or brand-new structure?

One aspect that will affect cost is whether it’s an attached (a basement system or addition) or removed (” DADU”) structure. Constructing a removed ADU is a lot like constructing a new home, complete with structure, four exterior walls, and roof, so they can be more costly than developing a connected ADU.


Don’t let their diminutive size fool you; even little structures require style work from a designer, particularly given the design puzzles that limited space can present. Figure in 8-15% of building and construction cost for your ADU design, depending on level of design services required and your option of designer.

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ADU Builder Happy Valley

Construction Costs

Building expenses differ a fair bit depending upon the specifics of a task. We’re frequently asked, “What does an ADU expense to develop per square foot?” But when developing a Happy Valley tiny house, we are essentially squeezing all of the components of a bigger house onto a smaller footprint, so per square foot expense falls short as a helpful procedure. Rather, overall cost is more useful. Normally speaking, the ADUs we construct (especially the stand-alone range) start at at sixty thousand dollars in building and construction expense, with that cost increasing depending on style options about surfaces, fixtures, and structure parts.

ADU Happy Valley remodels can be expensive. Contact us first to see if now is the right time to re-finance your home mortgage and if a remodel or if an ADU is the very best choice. Doing so may offer you with extra money for home jobs.

If you are seeking to buy a new home with Happy Valley guesthouse, we can match you with one of our vetted Happy Valley general contractors. Our local Happy Valley general contractor will assist you decide if and ADU is the best choice for you. We are here to help!

Happy Valley ADU Contractors Service Areas

BEAVERTON, CLACKAMAS, GLADSTONE , GRESHAM, HAPPY VALLEY, HILLSBORO, LAKE OSWEGO, OREGON CITY, PORTLAND, TIGARD, TROUTDALE, TUALATIN, WEST LINN, WILSONVILLE, VANCOUVER, CAMAS, 97223, 97008, 97224, 97035, 97281, 97078, 97219, 97076, 97075, 97077, 97298, 97062, 97034, 97005, 97225, 97221, 97007, 97239, 97258, 97036, 97268, 97269, 97201, 97140, 97291, 97003, 97205, 97202, 97222, 97006, 97204, 97267, 97251, 97238, 97228, 97208, 97280, 97296, 97294, 97283, 97286, 97256, 97254, 97253, 97282, 97290, 97292, 97293, 97242, 97207, 97240, 97068, 97209, 97214, 97070, 97210, 97229, 97227, 97206, 97027, 97232, 97212, 97215, 97123, 97266, 97213, 97217, 97086, 97216, 97211, 97015, 97203, 97132, 97218, 97220, 97002, 97236

Additional Information For Happy Valley, OR

Happy Valley is a city in Clackamas County, Oregon, United States. The population was 13,903 at the 2010 census.[2]

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